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Nutritional Epigenetic Programming and Embryo-Maternal Signaling in Sheep and Cattle
Nutritional Epigenetic Programming and Embryo-Maternal Signaling in Sheep and Cattle
Detailed Information
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202103530
- ISBN
- 9798314894682
- DDC
- 636
- 서명/저자
- Nutritional Epigenetic Programming and Embryo-Maternal Signaling in Sheep and Cattle
- 발행사항
- [Sl] : The University of Wisconsin - Madison, 2025
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2025
- 형태사항
- 265 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 86-11, Section: B.
- 주기사항
- Advisor: Khatib, Hasan.
- 학위논문주기
- Thesis (Ph.D.)--The University of Wisconsin - Madison, 2025.
- 초록/해제
- 요약This dissertation explores the impact of dietary factors on gene expression, epigenetic modifications, and fetal programming in livestock. Through a series of interrelated studies, this research investigates the influence of paternal and maternal nutrition on sperm, seminal plasma, oocytes, and embryos, as well as a separate study on extracellular vesicle communication. The first main chapter examines how a prepubertal methionine-enriched paternal diet affects sperm DNA methylation and its subsequent influence on embryo gene expression in sheep. We identified 166 differentially methylated cytosines (DMCs) in the sperm of treatment versus control rams, with correlations between seven DMCs and altered gene expression in embryos. These findings suggest that sperm methylation changes induced by diet may play a role in fetal programming through inheritance of epigenetic marks to the embryo, thereby affecting gene expression. The second chapter extends this investigation by analyzing the impact of paternal diet on the proteome and miRNA composition of seminal plasma (SP). We found that a methionine-enriched diet altered the abundance of 60 proteins and 138 miRNAs in SP, many of which are associated with reproduction and embryo development. These results highlight the potential role of SP components in modulating male fertility and contributing to fetal programming. The third chapter explores the effects of maternal methionine supplementation on oocyte and embryo DNA methylation in mature ewes. Using whole genome bisulfite sequencing, we identified 2,056 DMCs in oocytes and 113 DMCs in embryos. Additionally, mitochondrial DNA methylation analysis revealed 17 DMCs in oocytes and 22 DMCs in embryos. These findings demonstrate that maternal diet influences epigenetic modifications in both nuclear and mitochondrial DNA, potentially impacting embryo development and long-term offspring health. The final chapter investigates extracellular vesicle (EV) communication between embryos and the endometrium in a bovine model. We identified three full-length mRNA transcripts in EVs secreted by in-vitro produced bovine embryos. We chose to further investigate the role of one transcript, DPPA3, because of its well-known functions in embryonic development. This study revealed that DPPA3 modulates endometrial genes, including well-known pregnancy-related genes such as interferon stimulated genes, and affects their protein levels. These findings suggest a potential role for DPPA3 in embryo-maternal communication and early pregnancy establishment. Together, this dissertation provides novel insights into the mechanisms by which paternal and maternal diets influence gene expression and epigenetic modifications, contributing to fetal programming. Additionally, it highlights a distinct role for extracellular vesicles in embryo-maternal communication. These findings enhance our understanding of how parental nutrition shapes early development and may inform strategies for optimizing livestock management and improving reproductive efficiency.
- 일반주제명
- Animal sciences
- 일반주제명
- Genetics
- 일반주제명
- Nutrition
- 키워드
- DNA methylation
- 키워드
- Embryos
- 키워드
- Epigenetics
- 키워드
- Seminal plasma
- 기타저자
- The University of Wisconsin - Madison Animal and Dairy Sciences
- 기본자료저록
- Dissertations Abstracts International. 86-11B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■00520260202103530
■006m o d
■007cr#unu||||||||
■020 ▼a9798314894682
■035 ▼a(MiAaPQ)AAI32039826
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a636
■1001 ▼aGraybeal, Jessica Ellen-Townsend.
■24510▼aNutritional Epigenetic Programming and Embryo-Maternal Signaling in Sheep and Cattle
■260 ▼a[Sl]▼bThe University of Wisconsin - Madison▼c2025
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a265 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 86-11, Section: B.
■500 ▼aAdvisor: Khatib, Hasan.
■5021 ▼aThesis (Ph.D.)--The University of Wisconsin - Madison, 2025.
■520 ▼aThis dissertation explores the impact of dietary factors on gene expression, epigenetic modifications, and fetal programming in livestock. Through a series of interrelated studies, this research investigates the influence of paternal and maternal nutrition on sperm, seminal plasma, oocytes, and embryos, as well as a separate study on extracellular vesicle communication. The first main chapter examines how a prepubertal methionine-enriched paternal diet affects sperm DNA methylation and its subsequent influence on embryo gene expression in sheep. We identified 166 differentially methylated cytosines (DMCs) in the sperm of treatment versus control rams, with correlations between seven DMCs and altered gene expression in embryos. These findings suggest that sperm methylation changes induced by diet may play a role in fetal programming through inheritance of epigenetic marks to the embryo, thereby affecting gene expression. The second chapter extends this investigation by analyzing the impact of paternal diet on the proteome and miRNA composition of seminal plasma (SP). We found that a methionine-enriched diet altered the abundance of 60 proteins and 138 miRNAs in SP, many of which are associated with reproduction and embryo development. These results highlight the potential role of SP components in modulating male fertility and contributing to fetal programming. The third chapter explores the effects of maternal methionine supplementation on oocyte and embryo DNA methylation in mature ewes. Using whole genome bisulfite sequencing, we identified 2,056 DMCs in oocytes and 113 DMCs in embryos. Additionally, mitochondrial DNA methylation analysis revealed 17 DMCs in oocytes and 22 DMCs in embryos. These findings demonstrate that maternal diet influences epigenetic modifications in both nuclear and mitochondrial DNA, potentially impacting embryo development and long-term offspring health. The final chapter investigates extracellular vesicle (EV) communication between embryos and the endometrium in a bovine model. We identified three full-length mRNA transcripts in EVs secreted by in-vitro produced bovine embryos. We chose to further investigate the role of one transcript, DPPA3, because of its well-known functions in embryonic development. This study revealed that DPPA3 modulates endometrial genes, including well-known pregnancy-related genes such as interferon stimulated genes, and affects their protein levels. These findings suggest a potential role for DPPA3 in embryo-maternal communication and early pregnancy establishment. Together, this dissertation provides novel insights into the mechanisms by which paternal and maternal diets influence gene expression and epigenetic modifications, contributing to fetal programming. Additionally, it highlights a distinct role for extracellular vesicles in embryo-maternal communication. These findings enhance our understanding of how parental nutrition shapes early development and may inform strategies for optimizing livestock management and improving reproductive efficiency.
■590 ▼aSchool code: 0262.
■650 4▼aAnimal sciences
■650 4▼aGenetics
■650 4▼aNutrition
■653 ▼aDNA methylation
■653 ▼aEmbryos
■653 ▼aEpigenetics
■653 ▼aExtracellular vesicles
■653 ▼aDifferentially methylated cytosines
■653 ▼aSeminal plasma
■690 ▼a0475
■690 ▼a0369
■690 ▼a0570
■71020▼aThe University of Wisconsin - Madison▼bAnimal and Dairy Sciences.
■7730 ▼tDissertations Abstracts International▼g86-11B.
■790 ▼a0262
■791 ▼aPh.D.
■792 ▼a2025
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17357567▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
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